1081299379 has 2 divisors, whose sum is σ = 1081299380. Its totient is φ = 1081299378.

The previous prime is 1081299281. The next prime is 1081299383. The reversal of 1081299379 is 9739921801.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1081299379 is a prime.

It is not a weakly prime, because it can be changed into another prime (1081299389) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 540649689 + 540649690.

It is an arithmetic number, because the mean of its divisors is an integer number (540649690).

Almost surely, 2^1081299379 is an apocalyptic number.

1081299379 is a deficient number, since it is larger than the sum of its proper divisors (1).

1081299379 is an equidigital number, since it uses as much as digits as its factorization.

1081299379 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 244944, while the sum is 49.

The square root of 1081299379 is about 32883.1169295126. The cubic root of 1081299379 is about 1026.3968673302.

The spelling of 1081299379 in words is "one billion, eighty-one million, two hundred ninety-nine thousand, three hundred seventy-nine".